The initial concentration was 8.45M
Step 1: Given data
Initial concentration (C₁): ?
Initial volume (V₁): 635 mL = 0.845 L
Final concentration (C₂): 6.00 M
Final volume (V₂): 1.19 L
Step 2: Calculate the initial concentration
We have a concentrated NaCl solution and we want to prepare a diluted one. We will use the dilution rule.
C₁ × V₁ = C₂ × V₂
C₁ = C₂ × V₂ / V₁
C₁ = 6.00 M × 1.19 L / 0.845 L
C₁ = 8.45 M
Thus, The initial concentration was 8.45M
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342.3 g/mol
11 times 16
22 times 1
12 times 12
and then add them together
Answer:
1837.65 mmHg is the pressure in millimeters of mercury.
Explanation:
The expression for the conversion of Pressure (kPa) to pressure (mmHg) is shown below as:-
Pressure (kPa) = 7.501 x Pressure (mmHg)
The pressure value given = 245 kPa
It can be expressed in millimeters of mercury as:-
Pressure = 7.501 x 245 mmHg = 1837.65 mmHg
<u>1837.65 mmHg is the pressure in millimeters of mercury.</u>
Answer:
1.8x10¹⁷ molecules of CO are in each breath we take
Explanation:
Parts per million, ppm, is an unit of concentration in chemistry used for very diluted solutions.
<em>A 9ppm of X in a solution means in 1 million of molecules (1x10⁶) you have only 9 molecules of X.</em>
In a breath we have 2x10²² molecules and 9 ppm are CO. Thus, CO molecules in each breath are:
2x10²² molecules × (9 molecules CO / 1x10⁶ molecules) =
<h3>1.8x10¹⁷ molecules of CO are in each breath we take</h3>
